Street-sweeper construction



April 14, 1931. R. c. EVANS STREET SWEEPER CONSTRUCTION Ap 14, 1931- R. c. EVANS STREET SWEEPER CONSTRUCTION Filed April 23. 1926 2 Sheets-Sheet 2 I )forzaZaZC Z'uarza Patented Apr. 14, 1931 RONALD c. EVANS, or on rank, tremors s'rnnnnswnnrnn oonsrrnvcrron Q Application filed April as, 1920. Serial mi. 104,611, r

This invention relates to a new and im proved street sweeper construction, and more particularly to a construction for elevating and dumpingthe refuse receptacle carried by such sweepers. i i i The present invention relates to a type of sweeper which is power propelled andprovided with means for placing the refuse swept fromthe street into a receptacle carried by the vehicle. Witli such types of sweepers it is desirable to provide means for dumping the collected material into a truck or trailer by which it can be carried to the desired point of'deposit. Such a method of handling eliminates dead time in the use ofthe sweeper and avoids any rehanclling of the material, such as is required whenthe material is simply dumped in "piles in the street.

It'is an object of the present inventionto provide a sweeper construction of this character in which the material may be rapidly dumped by power means intoanother vehicle;

It is a further object to provide a construction of this character in which the refuse receptacle is lifted to such a height as to permit its gravity depositinto truck bodies.

It is an additional object to provide a construction which is simple and certain in its action, and which requiresbut few parts and a relatively small amount of power for its operation. d

Other and further objects the description proceeds;

I have illustrated a preferred embodiment of my invention in the accompanying draw ings, in which Figure 1 is a side elevation ofthe sweeper equipped with my invention;

Figure 2 is a view of Figure 1 as seen from the left; and a i i Figure 3 is a .plan view ofthe rear portion of the sweeper.

The truck shown is of the front drive-type and is providedwith the frame 11 carrying will appear as the power unit 12driving the forward wheels 13 through the power shaft 14:. The brush 15 located between the rear- Wheels 16,is driven through the chains diagrammatical- 1y indicated at 17 and 18/ The lever 19 is provided with a connection 20 for raising and lowering the brush. The refuse is swept by the brush onto the conveyor or belt 21, which is carriedabout rollers 22, 23 and 24, being driven by the roller 24. The conveying belt 25 is carried by the drum 26, rollers 27 and 28, and is driven by its contact with the belt. 21. The construction sofar described in. itself forms no part of the present invention; This form of sweeper; however, is one which) is particularly adapted for use in connection with my improved refuse receptacle construc- The receptacle 29 formed of sheet metal, is. solocated that the end of the belt 25 extends. over the "front edge of the receptacle, whichis cutaway at 40y as best shown-in Figure 3.1

The rollers 30 and SIarecarried upon studs secured to the opposite s'ides of the recep tacle, and serveto support itTfrom the curved tracks 32 and the inclined elevating tracks 33. The "cables 34 passaround'the pulleys. 35 secured to the upperrear corners of the receptacle 29. The cables 3d then extend: around the pulleys 36 carried at the upper ends ofthetracks-BS and thence extend down to thehoistingdrum 37 supported from the vehicle frame 11. The receptacle 29 is PIOVldBfl with a, swinging door 38 retained in place-by the spring pressed latch 39. In the operation of the sweeper the vehicle moves forward and in the sweeping operation the brush 15is driven in contact with the ground, the brush rotating in the counter clockwise direction; i The material is swept by the brush on to the conveyor belt 21 and this beltmovesonthe supporting pulleys in the counterclockwise direction. The mate rialis carried by thebelt" 21 untilit isengaged by the belt 25, which is pressed against the belt 21 by the drum 26. The materiallis thus heldbetween the twobelts5 andfby this means carried around tothe upper side of the drum 26. The belts separate at this ipointiand the material is carried by theupper run of the belt 25"and discharged from this belt as it turns down over the rollers 28. 1

When the receptacle 29+becomes filledwith refuse it is'necessary to dump this receptacle so as to rovide room for further refuse collected1 lhis dumping is accomplished by a wise direction which winds up the cables 34.

As these cablesare wound up they tend to straighten out the portions of the cables between the pulleys'36 and the rollers ad-' jacent which the lower ends'of the cables are a secured; This tension on the ;cablesswings the receptacle-in-thecounter clockwise direction about the rollers 31 as pivots This movement is imparted by the bearing otthe cables 34 against the pulleys 35E During this tilting movement ,ofthe recepe the ends of the tracks 3theyare located im del theiinclined tracks 33 and further wind-. ingiupof "the cablesi3t pulls the receptacle upwardly,-; the twolset's of rollers, '30? and r 32, both riding-rill the-tracks 33 and maintaining the? receptacle against tilting; The cables 3 1:1 leave the p11lleys-35,-and=due-tb the low point ofattachment of the=cables, the receptacle israise'tl'with-its-upper portionabove the puls The receptacle 29 is restored to receivingpoleys36. The latch- 39 is'operated tor-elease thezdoor and the material :is dumped into thetrailer or truck or otherreceptacle provided.

' sition' by slacking f awayl upon the cables'34 when the" rollers? 30 reach the bottom of the; 3 tracks 33.. "The eccentric load of-the receptacleitself causes the receptacle t-Q'tilt to the right" and forces the: roller-st 301tothe; left; limit of tliecurvedtracks 32. i

It will he notedthat thetracks3 3 aresomer; what curved. This hiisthe functionof pre-i senting the-receptaclefor dumping atisuch an angle that itwill dump clean and al-Lof :the material will readily-'slide by gravityoil?- the bottom of the "receptacle. It has theadd'i-c tfional' functionthat itL-Lfaci1itatesEtheinitial tilting of theirec'e ptacle before it starts; upj-J wardly to dumping position. This is accoma plishe'd bythetactthat'the'pulleys-35 and the pointuoi attachment ofthe cables 3t;=adja -j centthe rollers '30zare' '90 related that it isnot necesary for the cables to'be fully; straight ene'd' out between the point ot attachment and the'pul'leys 36' to bring the rollers 30 11K 61- thfe il'ower end: of: the tracks 33;; Thus; i thi sc.

tilting is accomplished without u-ndue tens sion' on? the cables and without any strain onthe'lparts' due to any tendency :o'fi 'therece ta -1 deter lift before it 'is' tilted m lis posiwill be Enoted that the f'rontfface of the esca ees-29 "is cutaway on the li-neAO s'o as to clear the-end of thebelt25and the rel-@1 28. As" the first movement at the: receptacle is; a tilting one thereceptac-le ,isrswung' tog bring the edge ttl clear of the roller 28- beioreiii-t startsto rise. r '3 ile 1 have illustrated my invention; in connection one form ofstreet sweeper pparatus; it- IS obviously capable at use in m tigation foimso'f such appara-v ing conditions as may come within the spirit and scope of the appended claims.

I claim: 7 1. In combination with a conveyor, a refuse receptacle so located a s-to-underlie the end ofithe conveyor to. receivexefuse carried by the conveyor, and means adapted'to successive ly tilt the receptacle to clear the con- 2 "In combination with a conveyor, a refuse veyorand toelevate-the receptacle above the V conveyora, V

tacle the rollers 30 roll downwardly along the path formed by tracks 39a Asthey reach:

receptacle so locatedas to underlie the end of I the conveyor to receive refuse carried by the conveyor, a pair of track's one ion either side of 'the'receptacle, the lower portions otthe two. tracks being ofiset ii -parallel relation, rollerscarried' by the receptacle and adapted]; to run on said track, a pulley adjacentthe uipperxend of the track, a cable: connected to. the? receptacle and passing over the pulley,

and means topull on the cable to til-t there-,- ceptacle clear of theconveyor-and toidraw 'lhe; rQcept-aclenpsaid track" past-the con; yblizi; I

33 In coin receptacle, a trackion' :eitherside of the 'rec'eptacle adapted" to receive "the rollers,'- said tracks, havinga lower: arcuategportionandranl upwardly extending portion, the lower rollers being rh dbyig a i yiine vhe arcuat'e track portionajandmeans to tilt-the receptacle; aboutfthe' upper rollersito bring the" lowerrollersjinto; the upwardly extend; ing portion and to'elevate the receptacle'with both said sets; of rollers v in; the upwardly elktendingportion ot the track, p r

, combination, a receptacle; a pair of vertically spaced rollerson either side of the receptacle,,{a'.trackon either side of the receptacle adapted- ;to receive 'the' rollers, said i in 511105,} a :ieceptacle, a: pair vertically spaced rollers on either side oi the tracks having a;.-lower;arcuate portion and v 7 an upwardly err-tendingv portion,- ..the lower rollers being normally located in the arouses track portions and the major port-ion of the weight of the receptaclebeinglocated .onthe opposite side of the tracknfroin' the arcuate portion so. as to cause the lower rollers to move to the limit of the arcuate track away from the upwardlyextending track portion.-

5. In combination-,a receptacle; a. pairflof vertically spaced rollers on either side of the receptacle, tracks adapted to receive the rollers; saidl-tracks having alower arcuate' portion and an upwardly extending. portion, the lower ,rollers I being; normally located in the arcuate; track; portions, the maj or ortionf of the weight of the; receptaclebe ng ocated jon: l'JhQ;.QppQSlt(-} side; of thetrackiromthe a-rcuate portion so as-to cause thel'owerlrollers to move to the limiter thearcuate track away from the upwardly eiztend-ing trackv ortion; a sw nsadapw l 9. w ie eeep aq r about the upper rollers as pivots to bring the lower rollers into the lower end of the upwardly extending track.

6. In combination, a receptacle, a pair of vertically spaced rollers on either side of the receptacle, a track on either side of the re ceptacle adapted to receive the rollers, said tracks having a lower arcuate portion and an upwardly extending portion, the lower rollers being normally located in the arcuate track portions, and cables connected to the receptacle to cooperate with the receptacle one one side of the upwardly extending track to swing the receptacle to bring the lower rollers into the upwardly extending track portions.

7. In combination a receptacle, a pair of vertically spaced rollers on either side of the receptacle, a track on either side of the receptacle adapted to receive the rollers, said tracks having a lower arcuate portion and an upwardly extending portion, the lower rollers being normally located in the arcuate track portions, and cables connected to the receptacle to cooperate with the receptacle on one side of the upwardly extending track to swing the receptacle to bring the lower rollers into the upwardly extending track portions, said cables passing over elevated pulleys whereby the cables also serve to elevate the receptacle.

Signed at Oak Park, Illinois, this 17th day of April, 1926.

R. C. EVANS. 

